4.9 DVD Commentary

[JHyde]

I love that two of my favourite scenes in this episode were largely improvised - that scene between Harry and Juliet is my favourite between those two characters over the seasons they work together and they're both so funny in it.

I had exactly the same thought about Adam and Jo being good looking cleaners!

The Michael Gorman character was a great addition to this script and that's another location that was a perfect choice - I think I've said elsewhere that I wonder if using this location gave them the idea to write the episode in season 5

Series season5 Spoiler: show

with the estuary blowing up. It looks spectacular.

I agree with NW that Shelley would have been a better choice. Austen is a bit too predictable.